Verified answer

Bonjour,

1h = 60 min

2h = 120 min

165 - 120 = 45

A= 2h et 45 min

B)

1h = 3600 s

45010 / 3600 = 12.50... donc on a 12h complètes

12h = 12 x 3600 = 43200 s

45010 - 43200 = 1810 secondes restantes

1 min = 60 s

1810 / 60 = 30.166... donc on  a 30 min complètes

30 min = 60 x 30 = 1800

1810 - 1800 = 10 secondes restantes

45010 s = 12h 30 min 10s